頡頏 けっこう
kekkō

Noun
Suru Verb

1. rising and falling (of a bird)

Intransitive
Rare
Noun
Suru Verb

2. rivalry (between two equally strong sides); struggle for supremacy; competing (with); vying (with); contending (with); being an equal match (for)

Intransitive
Rare
Related to 拮抗